Chuck



(No Model.) 3 Sheets-Sheet 1. J. A. GILES.

I GHUGK. No. 393,150. Patented Nov. 20, 1888.

, 4. F WITNESSES: a E INVENTOR, 5 A Z A lg ofwm Z 17 70 ATTORNEYS,

N. PETERS. Fholo-Lilhugrapllnn Washington. ujc

(No Model.) 3 Sheets-Sheet 2.

J. A. GILES.

OHUGK.

No. 888,150. Patented-Nov 20, 1888.

WITNESSES: INVENTOR ATTORNEYS,

N PErEns Ph oooo Lium m hu, Wlshlnginn. D80.

(No Model.) 3 Sheets-Sheet 3.

J. A. GILES.

' CHUCK.

No. 398,150. Patented Nov. 20, 1888.

WITNESSES: 7 I og J 1 h Id;

UNITED STATE i PATENT JULIAN A. GILES, OF OSWEGO, NEW YORK.

CHUCK.

SPECIFICATION forming part of Letters Patent No. 393,150, dated November 20, 1888.

Application filed September 13, 1838. Serial No. 285,278. (No model.)

To all whom it may concern.-

Be it known that I, JULIAN A. GILES, of ()swego, in the county of Oswego, in the State of New York, have invented new and useful Improvements in Chucks, of which the following, taken in connection with the accompany ing drawings, is a full, clear, and exact description.

This invention relates to the class of lathechucks which have the jaws adjustable independently of each other, as well as universally; and the invention consists in the im proved construction and combination of parts hereinafter described, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is aplan view of the rear of the chuck. Fig. 2 is a trans verse section on line x as, Fig. I. Fig. 3 is a transverse section taken in the plane y y, Fig. 2. Fig. at is aside view of the chuck having a portion of the body broken away to illustrate the jaw-adjusting devices. Figs. 5 and 6 are respectively face and side views of the chuck. Figs. 7 and 8 are detached perspective views of one of the jaws and its carrier. Fig. 9 is a transverse section of that portion of the chuck to which is attached the latch for locking the ring which carries the rack in and out of gear; and Fig. 10 is a side view of that portion of the aforesaid ring which is provided with the recess for the engagement of the latch.

Similar letters of reference indicate corresponding parts.

A denotes the body of the chuck,which has projecting from its back two concentric annular ribs, 1) 19, forming an annular groove, .10, between them. The hub A, by which the chuck is attached to the lathe, is formed separate and detachably secured to the body A, for the purpose herein presently explained.

G O 0 represent the jaws by which is gripped the work or article to be operated on.

D D D are the nuts or jaw-carriers, which slide in radial grooves 0 oo in the face-plate of the bod; A, and I I I are the screws which engage the said nuts or carriers and serve to adjust the jaws O O G to grip and hold the work or article in its requisite position on the chuck. Each of the screws I has a pinion, f, detachably connected to it in any suitable manner, preferably by forming the trunnion t with an angular neck and providing the pinion with a corresponding eye,by which it is slipped onto said neck. Said trunnion isjournaled in the outer rib, p, of the body A, and terminates with a squared end for the application of the wrench by which to turn said screw. The inner rib, p, of the body A is provided with an aperture, u, of such a size as to allow the trunnion I, withits aforesaid angular neck, to pass freely through it.

The screw I, with its pinionf, is connected to the bodyAby slipping the naked trunnion tthrough the apertures in the two ribsp p while holding the pinion in position in the groove 1) to cause the said trunnion to pass through the eye of the pinion. The opposite end of the screw is supported by a ring, r, inserted into a cavity, B, in the center of the body A, as shown in Fig. 2 of the drawings, said ring being provided with bearings 1" for the trunnion t on the aforesaid end of the screw. The ring r is retained in its position by the hub A, which laps onto the back of the said ring and is secured to the body A by bolts o.

9 represents the annular rack, which is seated in the groove 19, and is arranged niovably at right angles to the plane thereof, and thus adapted to either engage the pinions f f f and cause the jaws O O G to be adjusted universally, or release said pinions and allow the jaws to be adjusted independently of each other. For throwing the rack 9 into engagement with the pinion, I employ a ring, h, arranged in the groove 1) back of the rack and movable circumferentially and at right angles to its plane. This ring I provide with slots i, which extend transversely through the ring in the direction of the plane thereof, and are oblique or inclined in the direction of the circumference of the ring, as shown in Figs. 4 and 10 of the drawings. Through the adjacent portions of the head A (which portions are the ribs 1) p) are inserted pins j, which pass through the slots 2' of the ring h. By shifting the said ring circumferentially in one direction the engagement of the pins j with the oblique slots i crowds the ring toward the rack and throws the same into engagement with the pinions, and by shifting the ring in the opposite direction the ring is caused to recede from the rack and the latter is allowed to drop out of engagement with the pinions.

n represents a spring-latch, which is secured to one of the ribs p and engages a recess, 1, in the edge of the ring it, and thus confines the ring in its position for holding the rack in engagement with the pinions.

One of the chief features of novelty of my invention consists in the peculiar attachment of the jaw O to itscarrier D. This attachment I effect by the following means, to wit: The rear or side of the jaw adjacent to the face of the chuck-body A, I form with a mortise, a, preferably of segmental form, with the curvature lengthwise of the jaw. The carrier D, I form with a corresponding segmental tenon, b, which is inserted into the mortise a, and transversely through the said mortise and adjacent portions of the jaw are perforations d 0, through which passes a pin, 6. That portion of the perforation d which is farthest from the face of the chuck-head A,Iform V-shaped,with the bevel thereof toward and from the axis of the chuck. This V-shaped portion of the aperture d acts as a wedge upon the coupling-pin 6 when the jaws are subjected to pressure from the ar-. ticle gripped between them, said wedge crowding the jaw toward the face of the chuck-body, and thus maintaining the jaws in proper position to present their gripping-faces at right angles to the face of the chuck-head and enabling them to properly grip the work or article.

Having described myinvention,what I claim as new,and desire to secure by Letters Patent,

the jaws upon the article gripped between them, as set forth.

2. In combination with the chuck-body,the 5 jaws provided with mortises in the side facing the chuck-body, the carriers provided with tenons entering said mortises, and pins passin g transversely through the jaws and aforesaid tenons, substantially as set forth and shown.

3. In combination with the chuck-body,the jaws O O 0, provided with the mortises a and perforations c, the carriers D D D, provided with tenons b and with the perforation d, formed with the V-shaped portion d, and pins e, passing through the aforesaid perforations, substantially as described and shown. A

4. In combination with the body A, screws I I I, jaw-carriers D D D, operated thereby, pinions f ff, attached to said screws, and the rack 9, arranged movably at right angles to the plane thereof, the ring it, provided with the oblique slots i, and pins j, passing through said slots and adjacent portions of the body A, substantially as described and shown.

5. In combination with the body A, screws I I I,jaw-carriers D D D, pinionsfff on said screws, and the rack 9, arranged movably at right angles to the plane thereof, the ring h, provided with the recess 7, and oblique slots 2', pins j, passing through said slots and adjacent portions of the body A,and the latch on, attached to the body and adapted to enter .the recess 1, substantially as described and shown.

In testimony whereof I have hereunto signed my name, in' the presence of two witnesses, at Oswego, New York, in the county of Oswego, in the State of New York, this3lst day of August, 1888.

JULIAN A. GILES.

Witnesses:

ALBERT N. RADOLIFFE, G. 0. PLACE. 

